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從前端小白到大佬 js

密碼顯示與隱藏切換

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box {
            position: relative;
            width: 400px;
            border-bottom: red 1px solid;
            margin: 100px auto;
        }
        
        .box input {
            width: 259px;
            height: 30px;
            outline: none;
            border: 0;
        }
        
        .box img {
            position: absolute;
            top: 4px;
            right: 6px;
            width: 24px;
        }
    </style>
</head>

<body>
    <div class="box">
        <label>密碼:</label>
        <input type="password">
        <img src="../imgs/b.png">

    </div>
    <script>
        var input = document.querySelector('input');
        var img = document.querySelector('img');
        var flag = 0

        img.onclick = function() {
            if (flag == 0) {
                input.type = "text";
                img.src = "../imgs/z.png";
                flag = 1;
            } else {
                input.type = "password";
                img.src = "../imgs/b.png";
                flag = 0;
            }


        }
    </script>
</body>

在這裡插入圖片描述
在這裡插入圖片描述